Valve-spring-lifting device.



0. WISENANT.

VALVE SPRING LIFTING DEVICE.

APPLICATION FILED PBB.25. 1911.

1,012,31 1 Patented Dec. 19,1911.

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OSCAR WISENANT, O1? CHICAGO, IILLINOIS.

VALVE-SPRING-LIFTING DEVICE.

Application filed February 25, 1911,.

Specification of Letters Patent.

.i ili'lt lllfttll. lie-c. 19, 2911.

Seral No. 610,755.

secure the spring relatively to the valve can he removed tl'ierelrom.

For the purpose mentioned, use is made of a rack provided with a frame slidahle' on the rack, said frame having a pinion mounted therein for engagement with the saidrack and locking means mounted on the frame for releasably locking the frame relatively to the rack, a valve spring seat integrally formed on the rack and adapted to engage a valve spring orthe cup thereof, means for attaching the rack to the valve rod of a valve and a handle for operating the pinion relatively to the said rack for moving the spring, of the valve upwardly from its seat so that the key or other securing memher adapted to secure the spring in normal position can he released from coir nection with the valve rod. v

Reference is to he had to the accon'i anying drawings constituting a part ot this specification, in which similar characters of reference denote corresponding parts; in all the views, and in which Figure l is a side elevation of a portion of the valve and the rod thereof and showing my device, applied thereto with the spring of the valve 'aised from the member adapted tonormally position the spring relatively to the valve member, parts being broken away to show the underlying strurture. Fig. is a perspective view of my device. Fig. 3 is a sectional view taken on the line fil -l in Fig. Fig. l. is a tional view taken on the line l lin Fig. l,

' looking in the direction ot the arrow, and

Fig. is a 'persplaitive, view of the handle for operating the pinion of my lifting device.

ltel errii'ig more particularly to the views,

the usual valve rod [.0 is shown lIlOllIlltEll in the cylinder ll with a suitable valve 12 secured to one end of the valve rod and..a l

valve spring lit mounted to encircle the valve rod with a key iii in engagement; with the valve rod and adorned to he engaged hy the spring it, to position the spring relatively to the valve rod. The valve rod i is provided with a collar 15 secured. to the valve rod and having flanged portions it; and an, intermediate reduced portion 17.

A rack to is provided and Siidably mounted on the said rack is a casing 19 having mounted therein a pinion 20 For engagenn' nt with the said rack and with a locking bar 21 plVUltllly mounted on the upper side of the casing ill, the said locking har being adapted to engage the said raelt to releasuhly lock the nising' relatively to the rack. The pinion 20 is prii'vided with a centrally disposed silnare hole adapted i handle ill. The spring 12- ot the valve rod 10 is adapted to seal, in the valve spring cup the said cap heing ada ited to engage the key t l. it will he readily seen that the mentioned cup can he iilispensml with and if desired the spring): 13 can be mounted to ii'nn'iediately vin age the key 14-. integrally t'ormed on the upper end of the rack ltl and extending laterally therel'roin is a seat :Zll pret'erahly having a shape similar to that ot' a llOlFtbllOt'). and extended laterally outward from the (rising it) is a for]: 27 adaptiul to engage the reduced poi.

tion l7 ot' the collar with a chain con nected to the ends ot the tort; ill to releasahly dispose the fork inenganeinent with the collar 15.

In applying, my device to the valve rod '10, the Fork 2? is mounted to engage the collar 15 as mentionei'l and the seat Sill is adapted to' abut against the noder side oi the cup 25. Now, hy inserting the handle 24 in the square opening 22 oi the pinion 520 the said pinion can he operated to move the rack 18 upwardly, thus teiuling to move -the cup away from the key l t so that the key can he easily removed from (illlllltltflitlll with the valve rod it) as is shown in Fig.1. After the raelc l8 has heen raised to the desired position, the locking liar ii! is moved to engage the raclc, thus locking the casing it) relatively to the rack, and holding the rack in tinal position with the cap :35 spaced from the key '14.

Although inniy particular description I i have shown aid-y adapted tor retaining the spring 13 improper position on the valve to receive the square end Bil oil a suitable lit) rod 10 it will be understood that any other suitable method may be employed toposition ;the spring 13 and that my raising device'- will be applicable for raising the spring l3 with respect to the valve rod 10 when devices other than the key 14: are employed to position the spring 13. 1

Having thus fully described the invention, what'I claim as new, is 2-- A valve spring lifting device comprising v a rack, a casing slidably mounted on the said rack, the said rack being extended through the casing, a pinion revolubly mounted'in the said casing and engaging the said rack, a locking bar mounted to turn on the casing and adapted for releasably locking the said casing relatively to the said and a handle for connectionwith the said pinion to operate the 'saine in the said casing.

In testimony whereof I aflix my signature in presence of two witnesses.

OSCAR VISENANT.

\Vitnesses JOEL GRUBB, Enw. J. MITCHELL. 

